Fresh start

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diff --git a/jni/ruby/lib/rubygems/commands/environment_command.rb b/jni/ruby/lib/rubygems/commands/environment_command.rb
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+require 'rubygems/command'
+
+class Gem::Commands::EnvironmentCommand < Gem::Command
+
+  def initialize
+    super 'environment', 'Display information about the RubyGems environment'
+  end
+
+  def arguments # :nodoc:
+    args = <<-EOF
+          packageversion  display the package version
+          gemdir          display the path where gems are installed
+          gempath         display path used to search for gems
+          version         display the gem format version
+          remotesources   display the remote gem servers
+          platform        display the supported gem platforms
+          <omitted>       display everything
+    EOF
+    return args.gsub(/^\s+/, '')
+  end
+
+  def description # :nodoc:
+    <<-EOF
+The environment command lets you query rubygems for its configuration for
+use in shell scripts or as a debugging aid.
+
+The RubyGems environment can be controlled through command line arguments,
+gemrc files, environment variables and built-in defaults.
+
+Command line argument defaults and some RubyGems defaults can be set in a
+~/.gemrc file for individual users and a gemrc in the SYSTEM CONFIGURATION
+DIRECTORY for all users. These files are YAML files with the following YAML
+keys:
+
+  :sources: A YAML array of remote gem repositories to install gems from
+  :verbose: Verbosity of the gem command. false, true, and :really are the
+            levels
+  :update_sources: Enable/disable automatic updating of repository metadata
+  :backtrace: Print backtrace when RubyGems encounters an error
+  :gempath: The paths in which to look for gems
+  :disable_default_gem_server: Force specification of gem server host on push
+  <gem_command>: A string containing arguments for the specified gem command
+
+Example:
+
+  :verbose: false
+  install: --no-wrappers
+  update: --no-wrappers
+  :disable_default_gem_server: true
+
+RubyGems' default local repository can be overridden with the GEM_PATH and
+GEM_HOME environment variables. GEM_HOME sets the default repository to
+install into. GEM_PATH allows multiple local repositories to be searched for
+gems.
+
+If you are behind a proxy server, RubyGems uses the HTTP_PROXY,
+HTTP_PROXY_USER and HTTP_PROXY_PASS environment variables to discover the
+proxy server.
+
+If you would like to push gems to a private gem server the RUBYGEMS_HOST
+environment variable can be set to the URI for that server.
+
+If you are packaging RubyGems all of RubyGems' defaults are in
+lib/rubygems/defaults.rb.  You may override these in
+lib/rubygems/defaults/operating_system.rb
+    EOF
+  end
+
+  def usage # :nodoc:
+    "#{program_name} [arg]"
+  end
+
+  def execute
+    out = ''
+    arg = options[:args][0]
+    out <<
+      case arg
+      when /^packageversion/ then
+        Gem::RubyGemsPackageVersion
+      when /^version/ then
+        Gem::VERSION
+      when /^gemdir/, /^gemhome/, /^home/, /^GEM_HOME/ then
+        Gem.dir
+      when /^gempath/, /^path/, /^GEM_PATH/ then
+        Gem.path.join(File::PATH_SEPARATOR)
+      when /^remotesources/ then
+        Gem.sources.to_a.join("\n")
+      when /^platform/ then
+        Gem.platforms.join(File::PATH_SEPARATOR)
+      when nil then
+        show_environment
+      else
+        raise Gem::CommandLineError, "Unknown environment option [#{arg}]"
+      end
+    say out
+    true
+  end
+
+  def add_path out, path
+    path.each do |component|
+      out << "     - #{component}\n"
+    end
+  end
+
+  def show_environment # :nodoc:
+    out = "RubyGems Environment:\n"
+
+    out << "  - RUBYGEMS VERSION: #{Gem::VERSION}\n"
+
+    out << "  - RUBY VERSION: #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}"
+    out << " patchlevel #{RUBY_PATCHLEVEL}" if defined? RUBY_PATCHLEVEL
+    out << ") [#{RUBY_PLATFORM}]\n"
+
+    out << "  - INSTALLATION DIRECTORY: #{Gem.dir}\n"
+
+    out << "  - RUBYGEMS PREFIX: #{Gem.prefix}\n" unless Gem.prefix.nil?
+
+    out << "  - RUBY EXECUTABLE: #{Gem.ruby}\n"
+
+    out << "  - EXECUTABLE DIRECTORY: #{Gem.bindir}\n"
+
+    out << "  - SPEC CACHE DIRECTORY: #{Gem.spec_cache_dir}\n"
+
+    out << "  - SYSTEM CONFIGURATION DIRECTORY: #{Gem::ConfigFile::SYSTEM_CONFIG_PATH}\n"
+
+    out << "  - RUBYGEMS PLATFORMS:\n"
+    Gem.platforms.each do |platform|
+      out << "    - #{platform}\n"
+    end
+
+    out << "  - GEM PATHS:\n"
+    out << "     - #{Gem.dir}\n"
+
+    gem_path = Gem.path.dup
+    gem_path.delete Gem.dir
+    add_path out, gem_path
+
+    out << "  - GEM CONFIGURATION:\n"
+    Gem.configuration.each do |name, value|
+      value = value.gsub(/./, '*') if name == 'gemcutter_key'
+      out << "     - #{name.inspect} => #{value.inspect}\n"
+    end
+
+    out << "  - REMOTE SOURCES:\n"
+    Gem.sources.each do |s|
+      out << "     - #{s}\n"
+    end
+
+    out << "  - SHELL PATH:\n"
+
+    shell_path = ENV['PATH'].split(File::PATH_SEPARATOR)
+    add_path out, shell_path
+
+    out
+  end
+
+end
+